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Created complete V2 foundation infrastructure for modular MEV bot: Core Types (pkg/types/): - swap.go: SwapEvent with protocol support for 13+ DEXs - pool.go: PoolInfo with multi-index cache support - errors.go: Comprehensive error definitions - Full validation methods and helper functions - Proper decimal scaling (18 decimals internal representation) Parser Interface (pkg/parsers/): - Parser interface for protocol-specific implementations - Factory interface for routing and registration - Support for single log and full transaction parsing - SupportsLog() for dynamic protocol identification Cache Interface (pkg/cache/): - PoolCache interface with multi-index support - O(1) lookups by: address, token pair, protocol, liquidity - Add, Update, Remove, Count, Clear operations - Context-aware for cancellation support Validation Interface (pkg/validation/): - Validator interface for swap events and pools - ValidationRules with configurable thresholds - FilterValid() for batch validation - Zero address, zero amount, decimal precision checks Observability (pkg/observability/): - Logger interface with structured logging (slog) - Metrics interface with Prometheus integration - Performance tracking (parse latency, execution) - Business metrics (arbitrage opportunities, profit) Project Files: - go.mod: Module definition with ethereum and prometheus deps - README.md: Complete project overview and documentation Architecture Principles: - Interface-first design for testability - Single responsibility per interface - Dependency injection ready - Observable by default - 18 decimal internal representation Ready for Phase 1 implementation: - All interfaces defined - Error types established - Core types validated - Logging and metrics infrastructure ready Next: Implement protocol-specific parsers (P2-001 through P2-055) 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
77 lines
1.6 KiB
Go
77 lines
1.6 KiB
Go
// Package observability provides logging and metrics infrastructure
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package observability
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import (
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"context"
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"log/slog"
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"os"
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)
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// Logger defines the logging interface
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type Logger interface {
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// Debug logs a debug message
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Debug(msg string, args ...any)
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// Info logs an info message
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Info(msg string, args ...any)
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// Warn logs a warning message
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Warn(msg string, args ...any)
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// Error logs an error message
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Error(msg string, args ...any)
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// With returns a logger with additional context fields
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With(args ...any) Logger
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// WithContext returns a logger with context
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WithContext(ctx context.Context) Logger
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}
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// slogLogger wraps slog.Logger to implement our Logger interface
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type slogLogger struct {
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logger *slog.Logger
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}
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// NewLogger creates a new structured logger
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func NewLogger(level slog.Level) Logger {
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opts := &slog.HandlerOptions{
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Level: level,
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AddSource: true,
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}
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handler := slog.NewJSONHandler(os.Stdout, opts)
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logger := slog.New(handler)
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return &slogLogger{
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logger: logger,
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}
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}
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func (l *slogLogger) Debug(msg string, args ...any) {
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l.logger.Debug(msg, args...)
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}
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func (l *slogLogger) Info(msg string, args ...any) {
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l.logger.Info(msg, args...)
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}
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func (l *slogLogger) Warn(msg string, args ...any) {
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l.logger.Warn(msg, args...)
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}
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func (l *slogLogger) Error(msg string, args ...any) {
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l.logger.Error(msg, args...)
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}
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func (l *slogLogger) With(args ...any) Logger {
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return &slogLogger{
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logger: l.logger.With(args...),
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}
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}
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func (l *slogLogger) WithContext(ctx context.Context) Logger {
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// Could extract trace ID, request ID, etc. from context
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return l
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}
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